Improvement in signals for doors



B. epmmm. SIGNALS FOR poons.

Patented Sept-12,1876.

N PETERS. PHOTO-LITNOGRIPHEJL WASHINGTON. Dv C.

UNITE STATES PATENT OFFICE.

BENJAMIN G. MARTIN, OF NEW YORK, N. Y., ASSIGNOR OF THREE-FOURTHS OF HISRIGHT TO WILLIAM SEWARD, JR., OF NEW YORK CITY.

IMPROVEMENT IN SIGNALS FOR DOORS.

Specification forming part of Letters Patent No. 182.208, datedSeptember 12, 1876 application filed February 24, 1876.

To all whom it may concern Be'it known that I, BENJAMIN G. MARTIN, ofthe city, county, and State of New York, have invented a new andImproved Annunciator, which invention is fully set forth in thefollowing specification, reference being had to the accompanyingdrawing, in which- Figure 1 is a face view of my improved annunciator,showing the manner of applying it to a door. Fig. 2 is a horizontalsection thereof in the plane of the line :0 m, Fig. 1.

Similar letters indicate corresponding parts.

My invention relates to an annunciator for state-rooms of steamboats,bath-rooms, and other like places, its object being to show whether ornot a room is engaged or occupied through the medium of the door-lock;and the invention consists of a lock-case, in which is arranged asliding bolt provided with a rack, which engages a pinion having aspindle projecting into the door, on which spindle is arranged a signaldevice, over which is arranged a plate having an opening through whichthe signal can be seen, the operation being such that when the bolt ismoved to lock the door it operates the pinion, and turns the inscriptionon the signal-plate, so as to be presented to the opening in the platewhich covers said signal-plate, as will more fully hereinafter appear.

In the drawing, the letter Adesignates a portion of a door, and B is thecase of a lock, consisting, in this example, of a bolt, G, which isapplied to the door. The inner side of the bolt 0 is provided with arack, D, which meshes with a pinion, E, secured to one end of a spindle,F, to the other end of which is secured an annunciator or'signalingdevice, G, so that when the bolt 0 is moved in one or the otherdirection the spindle F, together with the annunciator, is rotated bythe action of the rack and pinion.

A suitable inscription may be marked on the face of the annunciator G,as seen in Fig. 1, and it is arranged under a plate, H, which is securedto the door A. This plate H is provided with an opening or sight, I,which is so arranged relatively to the annunciator G and the bolt 0 thatwhen the bolt is shut or moved to its closed position, as. seen in thedrawing, the opening I receives the inscription or signal part of theannunciator beneath it, so that the latter is exposed to view. When,however, the bolt is pushed inward the signal part of the annunciatorjust referred to is brought under the solid portion of the plate Inapplying the annunciator G to a door I so arrange it that the partthereof forming the-signal is exposed beneath the opening I when thebolt 0 is in a proper position to confine the door to its post, andhence when the door is looked a person on the outside of the room towhich it belongs is enabled to see at a glaneewhether or not the room isoccupied.

My invention can be applied to doors of state-rooms, bath-rooms, andvarious other public or private places, and can obviously be made in avariety of ways.

Whatl claim as new, and desire to secure by Letters Patent, is-

The ann-unciator-plate G and plate H,.having the opening I, incombination with the case B, bolt 0, rack and pinion D E, and extensiblespindle F, substantially as described,

said spindle being made in two parts to telescope one within the otheras and for the purpose set forth. In testimony that I claim theforegoing I have hereunto set my hand and seal this 18th day ofFebruary, 1876.

' BENJN. GREEN MARTIN. [L- s.] Witnesses:

WM. SEWARD, Jr., E. F. KASTENHUBER.

